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Temperature dependence of resistance in epitaxial Fe/MgO/Fe magnetic tunnel junctions

Abstract:

The temperature dependence of resistance in parallel (P) and antiparallel (AP) configurations (RP,AP) has been investigated in epitaxial Fe/MgO/Fe junctions with varying MgO barrier thicknesses tMgO. RAP exhibits a substantial decrease with increasing temperature for samples with tMgO ranging from 3.0 to 1.5 nm. In contrast, RP is approximately temperature independent when tMgO =3.0 nm and increases with temperature when tMgO =2.1 and 1.5 nm. Possible origins of this temperature dependence of...

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Publication status:
Published

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Publisher copy:
10.1063/1.3194150

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Journal:
APPLIED PHYSICS LETTERS
Volume:
95
Issue:
5
Pages:
052506-052506
Publication date:
2009-08-03
DOI:
ISSN:
0003-6951
URN:
uuid:78dbee2c-51d2-40d5-a4e0-99d6880bf235
Source identifiers:
12678
Local pid:
pubs:12678

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